Geothermal heat utilization system

Abstract

A geothermal heat utilization system includes a well that includes an upper opening, a lower opening, a water chamber capable of storing underground water inside, and a pump provided inside the water chamber and capable of pumping underground water; and a water suction pipe that extends from the pump toward a heat exchanger, wherein the water chamber includes an upper suction valve capable of being opened and closed toward the upper opening and a lower suction valve capable of being opened and closed toward the lower opening, and wherein the geothermal heat utilization system is configured such that, when any one of the upper suction valve and the lower suction valve is opened, the other is closed.

1 . A geothermal heat utilization system comprising:
 a heat exchanger;   a well that includes an upper opening that opens in an upper aquifer, a lower opening that opens in a lower aquifer, a water chamber provided between the upper opening and the lower opening and capable of storing underground water inside, and a pump provided inside the water chamber and capable of pumping the underground water; and   a water suction pipe that extends from the pump toward the heat exchanger,   wherein the water chamber includes an upper suction valve capable of being opened and closed toward the upper opening and a lower suction valve capable of being opened and closed toward the lower opening, and   wherein the geothermal heat utilization system is configured such that, when any one of the upper suction valve and the lower suction valve is opened, the other is closed.   
     
     
         2 . The geothermal heat utilization system according to  claim 1 , further comprising:
 a water injection pipe that extends from the heat exchanger toward the lower opening,   wherein the well further includes
 an upper water injection valve capable of injecting water in the water injection pipe into the upper opening, and 
 a lower water injection valve capable of injecting water in the water injection pipe into the lower opening. 
   
     
     
         3 . The geothermal heat utilization system according to  claim 1 , wherein the water chamber further includes an upper surface packer covering an upper surface of the water chamber and a lower surface packer covering a lower surface of the water chamber and is capable of being sealed with respect to at least one of the upper opening and the lower opening. 
     
     
         4 . The geothermal heat utilization system according to  claim 1 , wherein the water chamber further includes an all-surface packer covering all surfaces of the water chamber and is capable of being sealed with respect to at least one of the upper opening and the lower opening. 
     
     
         5 . The geothermal heat utilization system according to  claim 1 , wherein the well further includes an operating rod to which the upper suction valve and the lower suction valve are fixed and which is movable upward and downward.